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Schottky Diode for GHz range

RitooV
Associate

Hi,

I am working on a project involving input signal in the 3-5 GHz range. For the rectifier circuit, I wanted to use the BAS70-04FILM diode by ST. Is that suitable for the given frequency range though? Else is there any alternative for the same? 

Thanks & regards,

Ritoo

(PS didn't find a suitable label for this post)

1 REPLY 1
AScha.3
Chief III

Hi,

you can try it - any Schottky diode will work in some way... a 70V diode is more for power supply etc.

AScha3_1-1720419625596.png

 

but you should take a real RF-diode, if you want more, than just "works a bit" .

This is a rf diode:

https://www.mouser.de/ProductDetail/Advanced-Semiconductor-Inc/5082-2835?qs=EU6FO9ffTweWz7nfvMI64w%3D%3D

AScha3_0-1720419240073.png

or many others, like :

https://www.mouser.de/ProductDetail/onsemi/MMDL101T1G?qs=P4IOph%252Bbot9kQ4drEZyhAg%3D%3D

AScha3_2-1720419719206.png

here a real fast one, expensive also:

https://www.mouser.de/ProductDetail/MACOM/MSS39-152-H20?qs=%252B6g0mu59x7Ked%252By5qPRwHw%3D%3D

AScha3_3-1720419978896.png

 

 

But to get to 5GHz - is not easy.

What it should do ?  Check RF level? Small signal, big - how many mV ?

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